I'm in Dubai. So technically even if its rewrapped or counterfeit, I don't need to worry much? Even if I go up to 65W? WHich I know its not high but if I can't really rely on the quality, then it could make a difference.
There is more counterfeit shit blowing through this country than sand. Some of the vendors here don't care and some do. The best one I've found is
https://www.vapegasim.com/ but like all the rest you'll pay a premium for stuff. I've spoken with the owner a few times and he knows what he's doing and I trust that he would not knowingly sell counterfeit items. That being said, it's hard to detect counterfeit batteries . You can get by with lots of counterfeit things but batteries are the one thing that could fuck up your day but good, not to mention your face. Don't be penny wise and dollar foolish and buy batteries that are questionable. The things are so cheap to begin with that it blows my mind that people skimp on them.
You can get them from trusted sources in the US for half of what they charge here. You'll have to pay for courier shipping so that'll raise the price quite a bit but if you buy 5-6 pairs you'll be good for the next two years. And you won't have to worry about setting your car or house on fire, not to mention your face.